The American Society of Hematology (ASH) is a professional organization for hematologists, or doctors who specialize in the study and treatment of blood disorders. The society was founded in 1958 and is headquartered in Washington, D.C. ASH has over 18,000 members worldwide and is dedicated to advancing the understanding and treatment of blood disorders through research, education, and advocacy. The society publishes several scientific journals and hosts an annual meeting that is attended by thousands of hematologists from around the world. ASH also provides funding for research and education programs, as well as patient support services.